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==Key Stage 4==
===Meaning===
[[File:EndocrineSystem.png|right|300px|thumb|This [[diagram]] shows several [[Endocrine Gland|endocrine glands]] in the '''endocrine system'''.]]
The '''endocrine system''' is an [[Organ System|organ system]] made of several [[Endocrine Gland|glands]] which produce [[hormone]]s.